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12.10.73 Fault 26 - Start-up prevented, Subcode S1 - Prevention of accidental start-up
Cause
Start-up of the drive has been prevented. Run request is ON when new application is downloaded to the drive.
Troubleshooting
Cancel prevention of start-up if it can be done safely.
Remove Run request.
12.10.74 Fault 26 - Start-up prevented, Subcode S2 - RUN request is kept active after drive returns
to READY state from safe state
Cause
Start-up of the drive has been prevented. START command is ON when returning to READY state after Safe Disable has been active.
Troubleshooting
Cancel prevention of start-up if it can be done safely.
Remove Run request.
12.10.75 Fault 26 - Start-up prevented, Subcode S30 - RUN request given too quickly
Cause
Start-up of the drive has been prevented. START command is ON after system software or application was downloaded, or after
application was changed.
Troubleshooting
Cancel prevention of start-up if it can be done safely.
Remove Run request.
12.10.76 Fault 29 - Thermistor fault, Subcode S1 - Thermistor input activated on OPTAF board
Cause
The thermistor input of option board has detected increase of the motor temperature.
It is possible to set different responses in the application for this fault. See parameter group Protections.
Troubleshooting
Do a check of the motor cooling and loading.
Do a check of the thermistor connection.
(If thermistor input of the option board is not in use it has to be short-circuited).
12.10.77 Fault 29 - Thermistor fault, Subcode S2 - Special application
Cause
The thermistor input of option board has detected increase of the motor temperature.
It is possible to set different responses in the application for this fault. See parameter group Protections.
Troubleshooting
Do a check of the motor cooling and loading.
Do a check of the thermistor connection.
(If thermistor input of the option board is not in use it has to be short-circuited).
12.10.78 Fault 30 - Safe disable
Cause
The input on OPTAF board has opened.
STO inputs SD1 and SD2 are activated through the OPTAF option board.
Troubleshooting
Cancel Safe Disable if it can be done safely.
12.10.79 Fault 31 - IGBT temperature (hardware)
Cause
IGBT Inverter Bridge overtemperature protection has detected too high a short-term overload current.
AQ275638903263en-000601 / DPD00910
184 | Danfoss A/S © 2022.12
Specifications
VACON® NXS/NXP Air-cooled
Operating Guide
